Ultrasol® SOP is a source of potassium (K) and sulfur (S) completely soluble in water and in crystalline form. It is used in soil fertigation of crops during the ripening stage or when there is a high demand for potassium at stages where nitrogen requirements are minimal, providing part of the potassium without nitrogen. |This premium quality fertilizer is virtually free of chlorides, sodium and heavy metals. Its free-flowing crystalline powder form is compatible with all water-soluble fertilizers except those containing calcium.
